code: def test_get_config_file_name(self):
      args = generate_args()
      self.assertEqual("xOpEwA5w", get_config_filename(args))
  
file_path: nni/test/ut/tools/nnictl/test_nnictl_utils.py
imports: import os
  import sys
  from mock.restful_server import init_response
  from mock.experiment import create_mock_experiment, stop_mock_experiment, generate_args_parser, generate_args
  from nni.tools.nnictl.nnictl_utils import get_experiment_time, get_experiment_status, check_experiment_id, parse_ids, get_config_filename, get_experiment_port, check_rest, trial_ls, list_experiment
  import unittest
  from unittest import TestCase, main
  import responses
label_desc: Use image node_id 6 for calling the CommonUtilsTestCase obj's underlying member method code with example usage: obj.test_get_config_file_name() without return types